import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
df = pd.read_excel('某公司各部门1—2月份实际支出.xlsx')
plt.figure (figsize=(8,4))
plt.rcParams['font.sans-serif']='SimHei'
plt.title('某公司各部门1-2月份实际支出簇状柱形图')
plt.ylabel('实际支出(元)')
x_data = np.arange(len (df['部门']))
height_data = []
height_data.append(df['1月'])
height_data.append(df['2月'])
width =0.4
for i in range(len (height_data)):
    x=x_data + i * width
    height = height_data[i]
    plt.bar (x, height, width)
    for a, b in zip(x,height):
        plt.text(a, b,'%d' % b, ha='center')
plt.xticks(x_data + 0.2,df['部门'])
plt.legend(('1月','2月'))
plt.show ( )